What is the common term for a ureteroileocutaneous diversion created after a cystectomy?

The term used to describe a ureteroileocutaneous diversion created after a cystectomy is "ileal conduit." This procedure involves using a segment of the ileum (part of the small intestine) to divert urine away from the bladder, which is removed during the cystectomy due to conditions like bladder cancer. In an ileal conduit, urine flows from the ureters into the ileal segment, which is then brought out through the abdominal wall to form a stoma. This allows urine to exit the body into an external collection bag.

Other terms presented in the options relate to different types of diversions or surgical procedures. A colostomy specifically pertains to the diversion of the colon and is generally not used for urinary diversion. A urostomy is a broader term that refers to any surgical procedure that creates a passage from the urinary tract to the outside of the body; however, it does not specify the use of the ileum as the conduit. Nephrostomy involves placing a tube directly into the kidney for urinary drainage, typically in cases of obstruction. Thus, while related, these terms do not specifically refer to the ureteroileocutaneous diversion established by the ileal conduit technique.